diff options
| author | Mans Rullgard <mans@mansr.com> | 2016-01-17 23:31:02 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2016-01-20 09:59:27 +0100 |
| commit | 3568459a51136f418ca8cad48a0db3803010148a (patch) | |
| tree | bd62b4fb29f83d30bfadf35137810686451096e7 /sound | |
| parent | ALSA: control: Avoid kernel warnings from tlv ioctl with numid 0 (diff) | |
| download | linux-3568459a51136f418ca8cad48a0db3803010148a.tar.xz linux-3568459a51136f418ca8cad48a0db3803010148a.zip | |
ALSA: at73c213: manage SSC clock
Since commit 49af54ff0fc7 ("misc: atmel-ssc: prepare clock only when
request") the SSC driver expects clients to manage the SSC clock.
This updates the at73c213 driver to enable the SSC clock whenever it is
needed.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/spi/at73c213.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sound/spi/at73c213.c b/sound/spi/at73c213.c index 39522367897c..fac7e6eb9529 100644 --- a/sound/spi/at73c213.c +++ b/sound/spi/at73c213.c @@ -221,6 +221,8 @@ static int snd_at73c213_pcm_open(struct snd_pcm_substream *substream) runtime->hw = snd_at73c213_playback_hw; chip->substream = substream; + clk_enable(chip->ssc->clk); + return 0; } @@ -228,6 +230,7 @@ static int snd_at73c213_pcm_close(struct snd_pcm_substream *substream) { struct snd_at73c213 *chip = snd_pcm_substream_chip(substream); chip->substream = NULL; + clk_disable(chip->ssc->clk); return 0; } @@ -897,6 +900,8 @@ static int snd_at73c213_dev_init(struct snd_card *card, chip->card = card; chip->irq = -1; + clk_enable(chip->ssc->clk); + retval = request_irq(irq, snd_at73c213_interrupt, 0, "at73c213", chip); if (retval) { dev_dbg(&chip->spi->dev, "unable to request irq %d\n", irq); @@ -935,6 +940,8 @@ out_irq: free_irq(chip->irq, chip); chip->irq = -1; out: + clk_disable(chip->ssc->clk); + return retval; } @@ -1012,7 +1019,9 @@ static int snd_at73c213_remove(struct spi_device *spi) int retval; /* Stop playback. */ + clk_enable(chip->ssc->clk); ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS)); + clk_disable(chip->ssc->clk); /* Mute sound. */ retval = snd_at73c213_write_reg(chip, DAC_LMPG, 0x3f); @@ -1080,6 +1089,7 @@ static int snd_at73c213_suspend(struct device *dev) struct snd_at73c213 *chip = card->private_data; ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXDIS)); + clk_disable(chip->ssc->clk); clk_disable(chip->board->dac_clk); return 0; @@ -1091,6 +1101,7 @@ static int snd_at73c213_resume(struct device *dev) struct snd_at73c213 *chip = card->private_data; clk_enable(chip->board->dac_clk); + clk_enable(chip->ssc->clk); ssc_writel(chip->ssc->regs, CR, SSC_BIT(CR_TXEN)); return 0; |